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A 2.50-L sample of a colorless gas at STP decomposed to give 2.50 L of N2 and 1.25 L of O2 at STP. What is the colorless gas?
consider the following reaction.ch3ohg cog 2 h2g h 90.7 kjcalculate e when 770.0 g of ch3ohg completely reacts at a
How many moles of MgCl2 are present in 50.0 mL of 0.800 M MgCl2 solution?
if a 5.0ml aliquot (portion) of the above solution was taken and diluted to 500.0mL. What is the concentration of this new solution
how many grams of gold would plate on the metal used for the medallion? Explain what you are thinking as you show your calculations.
you want to know the detergent composition of an extract of a shampoo. you spot the sample on a tlc plate and develop
The acidic constituent in vinegar is acetic acid. A 10.0-mL sample of a certain vinegar contains 500. mg of acetic acid. What is this mass of acetic acid expressed in micrograms?
1. compare the structure of the thiosulphate ion vs. sulphite ion2. how would you determine the degree of purity of the
Question- Complete the charge balance equation for an aqueous solution of H2CO3 that ionizes to HCO3- and CO32- State chemical question and provide explanation
when a nitrite containing sample with a mass of 3.000 g was analyzed 16.65 ml of 0.1500 m na2s2o3 solution was required
How many grams of the K2C2O4XH2O in the salt mixture remain unreacted (in excess). What is the percent by mass of each salt in the mixture
How many grams of O2 are needed to react with 20.9 grams of Mg?
at a constant volume and moles the temperature of a sample of neon ne gas increased from 320f to 370c. what is the
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